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Finding the Fourth Proportional to 38,711.82, 53,423.12 and 21,944.82

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Solution

The fourth proportional to 38,711.82, 53,423.12 and 21,944.82 is: 30,284.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,711.82 : 53,423.12 = 21,944.82 : x
  2. Step 2: Convert to fraction form
    38,711.82/53,423.12 = 21,944.82/x
  3. Step 3: Cross multiply
    38,711.82x = 53,423.12 × 21,944.82
  4. Step 4: Simplify right side
    38,711.82x = 1,172,360,752.24
  5. Step 5: Solve for x
    x = 1,172,360,752.24/38,711.82
  6. Step 6: Final answer
    x = 30,284.31

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.